Mariela Romero-Diaz, M.D.
NPI 1730382532 · Emergency Medicine Physician · Humacao, PR
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariela Romero-Diaz, M.D. is a Emergency Medicine Physician provider in Humacao, PR (NPI 1730382532).
Provider details
- NPI number
- 1730382532
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 17162 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
129 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 49 | $8 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 47 | $68 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 33 | $116 |
Typical Medicare-allowed amounts for these services range $8–$116 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 41 | 41 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 37 | 37 |
| Levofloxacin | 31 | 31 |
| Ciprofloxacin Hcl | 25 | 25 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 21 | 19 |
| Diclofenac Potassium | 21 | 21 |
| Meclizine Hcl | 17 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-08
- Last updated
- 2013-05-21
Frequently asked questions
- What is Mariela Romero-Diaz's NPI number?
- Mariela Romero-Diaz's National Provider Identifier (NPI) is 1730382532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariela Romero-Diaz's specialty?
- Mariela Romero-Diaz is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mariela Romero-Diaz located?
- Mariela Romero-Diaz's practice location on file with NPPES is Hospital Ryder Memorial Incs, Humacao, PR 00791.
- What is Mariela Romero-Diaz's phone number?
- The practice phone number listed in the NPPES registry for Mariela Romero-Diaz is (787) 852-0768.
- Does Mariela Romero-Diaz accept Medicare?
- Mariela Romero-Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariela Romero-Diaz's NPI active?
- Yes — Mariela Romero-Diaz's NPI (1730382532) is active in the NPPES registry as of the last update on 2013-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.